28567751128 has 32 divisors (see below), whose sum is σ = 63878204160. Its totient is φ = 11711003040.

The previous prime is 28567751123. The next prime is 28567751153. The reversal of 28567751128 is 82115776582.

It is a super-2 number, since 2×28567751128² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28567751123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11088678 + ... + 11091253.

It is an arithmetic number, because the mean of its divisors is an integer number (1996193880).

Almost surely, 2^28567751128 is an apocalyptic number.

28567751128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28567751128 is an abundant number, since it is smaller than the sum of its proper divisors (35310453032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28567751128 is a wasteful number, since it uses less digits than its factorization.

28567751128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22179967 (or 22179963 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 52.

The spelling of 28567751128 in words is "twenty-eight billion, five hundred sixty-seven million, seven hundred fifty-one thousand, one hundred twenty-eight".